Screw holder



Feb. 14, 1950 A, H, CARLSON 2,497,256

SCREW HOLDER Filed June '7, 1945 I Inveniorx flndrewH6'arZ son PatentedFeb. 14, 1950 ;--S.GREW HOEDER AndrewIH'. 'Car1son,Worceste;i,1Mass.,-as'signor. to. "Parker Manufacturing, Company, Worcester, a corporationof Massachusetts .ApplicationJnne-J, 1945',i:iSerial'Nos-5fi8',107

1L1 flThis invention, relates to:;scr.ew holders, that isto same.device. for use" with a screwdriver to holds.screw.engagedwith'theedgeof the bladethereof, usuallyfor use during'the initial stages of drivingor later stages of withdrawing "the screw..".The.ob1iect ofitheinvention is to provide an efiective andneatvdevice of thisdescription embodying few "and Simple-parts and which is easy toamanufacture and-assemble. .Inits :general method of operation thedevicewhich-L am about to describeis similanto thatdescribed in thepatent-'to"Fegley an'di'seopol'd'No. 864,633, Augustso27, 1907, andthuszineone aspect maybe considered: as animprovementpn. the device ofthat patent.

iTheinvention. will .be well understood by. reference to zthe Jfollowing description taken, inv 'connection with the.accompanying,.drawingaof a specific embodiment -.ther.eof. wherein:

's'iiighi-isan elevation of a screwrdriver'with. a Screwholder-illustrative. of the inventiontin position thereon;

Fig. 2 is an enlarged view of the upper portion of Fig. 1;

Fig. 3 is a corresponding view as seen from the side;

Figs. 4 and 5 are views corresponding to Figs. 2 and 3 showing the partsin another position ready to receive a screw;

Fig. 6 is a view similar to Fig. 4 but showing only the extreme end ofthe screw driver blade with the screw held in the jaws of the holdindevice; and

Figs. '7 and 8 are sections on the lines 1'| and 8+8 of Fig. 2,respectively.

. In the following description I shall use the word rearwardly assignifying away, from the edge of the screw driver or toward the handle,that is, downwardly viewing the various figures.

Referring to the drawing, I have there shown an ordinary hand-operatedscrew driver having a shank ID, conveniently non-circular in section asseen in Fig. 8, and a handle 12 at its rear end. The edge of the toolmay be formed on a terminal portion H of conventional form in partsomewhat wider laterally than the shank and thus constituting an exampleof a suitable construction providing enlargements l6 (Fig. 3) locatedrearwardly of the edge of the screw driver and serving as abutments aswill hereinafter appear. The screw is maintained on the edge of the toolas shown in Fig. 6 by means of jaws I8 provided on the inturned ends ofa pair of spring arms of fiat strip material which by means presently tobe described are normally retracted rearwardly toward-the handle of the.screw .driver.

to. hold-the nick of the screw engaged withthe.

centithefidge of the screw driver as shown in.

Figs. 2 and aibut-the-entire mechanism may he slid rearwardly along theshank as to the-dotted line;positionaof.-Fig..-l out of theway when itis not desired touse it.

sHereini -the.-arms 2B are integral extensions fromia eentraliportion22-- (see Fig. 8) perforated to encircle and slide on the screw drivershank. Alternating with thearms- (-andherein also integral with the:central portion 7 22) are fiat springs 24 extending iiorwardlylongitudinally of the shanlg, ;-pneferab1y inclining inwardly somewhatas shown; in-yFig. 3 and terminating in outwardly curved endsprovidinginwardly presented bearing portionsifi. :These bearing portionsslide on the; :diagonally disposed surfaces of two rearwardly andinwardly-extending arms 28 which herein are integral extensions bentfrom the sides of a central perforated washer-like element 30 (see Fig.'7) which encircles the shank and is supported against forwarddisplacement therefrom by the enlargements l6. In the example of theinvention shown the rearward ends of the arms 28 rest upon the shank toprovide substantially rigid wedges which are adapted to flex the springs24 outwardly from the position of Fig. 3 to the position of Fig. 5 whenthe rearward member (comprising the portion 24 and the parts carriedthereby) is thrust forwardly and thus set up a tension tending to returnthe member rearwardly toward the position of Fig. 3.

Herein the part 30, on the sides relatively perpendicular to those fromwhich extend the arms 28, is shown as provided with recesses 32 whichreceive narrower intermediate portions of the arms 20, whichintermediate portions thus present, at their lower and upper endsrespectively, shoulders 34 (Fig. 3) and 36 (Fig. 5) which cooperate withthe sides of the recesses in the manner shown in those figures to limitrelative longitudinal movement of the two members which compriserespectively the central portions 30 and 20 and the parts carriedthereby. Preferably the intermediate portions of the arms 20 are soshaped and the distance between the adjacent sides of the recesses(horizontal distance viewing Fig. 7) is such that when the rearwardmember is pressed outwardly from the position of Figs. 2 and 3 to theposition of Figs. 4 and 5 the jaws l8 are spread apart, as best shown inFig. 4, to facilitate the insertion of the screw between them. When theparts are released to the tension of the springs 20, the jaws engage theunder side of the screw head and hold the screw with its nick seated onthe edge of the screw driver as shown in Fig. 6. The sides of therecesses may be upset over the outer surface of the arms 20 to provideoverhanging lugs 38, best seen in Fig. 7, which retain the arms 20against casual displacement from the recesses and define a point offiexion for the forward portions of the arms when stressed by theinterposed screw.

In the construction illustrated the holder is assembled with the screwdriver shank by sliding it on over the shank from the rear end beforethe handle is attached.

I am aware that the invention may be embodied in other specific formswithout-departing from the spirit or essential attributes thereof, and Itherefore desire the present embodiment to be considered in all respectsas illustrative and not restrictive, as is in fact clear in severalmatters from the description itself. Reference is to be had to theappended claims to indicate those principles of the inventionexemplified by the particular embodiment described and which I desire tosecure by Letters Patent.

I claim:

1. A screw holder for a screw driver having an abutment on its shankadjacent its end comprising a first member having a perforated centralportion to encircle the shank of the screw driver rearward of theabutment and to engage the abutment, said member having oppositelypositioned arms inclined rearwardly and inwardly, and a second memberhaving a central perforated portion to encircle and slide on the shankand oppositely positioned arms forming longitudinally extending fiatsprings, the ends of which ride on the arms of the first member and alsoother arms extending from said central portion at locations between thesaid second mentioned oppositely positioned arms and extending tor-Wardly past the first member and terminally providei with jaws forengaging the sides of a screw hea 2. A screw holder for a screw driverhaving an abutment on its shank adjacent its end comprising a firstmember constituted by a single piece of sheel metal providing aperforated central portion to encircle the shank of the screw driverrearward of the abutment and to engage the abutment, said member havingoppositely positioned arms inclined rearwardly and inwardly, and asecond member constituted by a single piece of sheet metal providing acentral perforated portion to encircle and slide on the shank andoppositely positioned arms forming longitudinally extending flatsprings, the ends of which ride on the arms of the first member and alsoother arms extending from said central portion at locations between thesaid second mentioned oppositely positioned arms and extending forwardlypast the first member and terminally provided with jaws for engaging thesides of a screw head.

ANDREW H. CARLSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 192,901 Curtis July 10, 1877864,633 Fegley et al Aug. 27, 1907 1,090,028 Comb et al Mar. 10, 19141,212,743 Cowell Jan. 16, 1917 1,426,320 Reid Aug. 15, 1922 1,522,927Wickstrom et al. Jan. 13, 1925 1,770,182 Ritter July 8, 1930 2,292,657Priest Aug. 11, 1942

